For how much work had to probably go into a performance that was to be the most unique thing that happened on that Grammys stage that night---he's right.  For Trent Reznor, Josh Homme, Dave Grohl, and Lindsey Buckingham, the abbreviated performance must have felt like a punch in the face.

Read Trent's thoughts here AND catch a great preview of the upcoming Nine Inch Nails episode of Austin City Limits!

Kevork Djansezian / 2014 Getty Images